Boring machine



Nov. '12, 1935. TURNER ET AL 2,020,812.

BORING MACHINE Filed May 15, 1933 2 Sheets-Sheet 1 3 J k 3 1. 1 xx t:\:I I

Nov. 12,1935. W TURNER HAL 2,020,812

BORING MACHINE Filed May 15, 1955 2 Sheets-Sheet 2 Patented Nov. 12,1935 UNITED STATES BORING MACHINE John W. Turner, Houston, and Edwin H.Bruchmiller, Kilgore, Tex.

Application May 13, 1933, Serial No. 670,836

1 Claim.

This invention relates to a boring machine.

An object of the invention is to provide a machine specially designedfor the purpose of reaming tapering seats or tapering bores and thelike.

A particular object of the invention is to provide a machine of thecharacter described which has been specially adapted for use in reamingout the seats of slush pump, so that a snug fit will be obtained for thepump valve mechanism.

The material around the valve mechanism of slush pumps soon becomes outout by the gritty fluid handled by the pump so that there will be apassage between the seat of the valve mechanism and the seat of thepump, wherein said valve mechanism is located, thus causing leakage andin such case the valve mechanism must be removed and the pump seatreamed out and formed smooth so as to provide a perfect fit with theseat of the Valve mechanism when reinstalled.

It is an object of this invention to provide a reamer of suchconstruction that this work may be done without dismantling the pump.

Another object of the invention is to provide a reaming machine of thecharacter described of such construction, that any desired taper may begiven to the work.

A further object is to provide a reaming machine of the characterdescribed which is portable and which may be readily applied to repairwork of a pump without disconnecting the pump or removing the pump fromits location.

This is specially advantageous in the case of pumps connected into awell drilling rig equipment.

With the above and other objects in view, the invention has particularrelation to certain novel features of construction, operation andarrangement of parts, an example of which is given in this specificationand illustrated in the accompanying drawings, wherein:

Figure 1 shows a side elevation of the complete machine.

Figure 2 shows an inside View of the chuck.

Figure 3 shows a sectional view taken on the line 3-3 of Figure 2.

Figure 4 shows a vertical sectional view, taken on the line 44 of Figure1.

Figure 5 shows a horizontal sectional view taken on the line 5-5 ofFigure 1.

Figure 6 shows a horizontal sectional view taken on the line 66 ofFigure 1, and

Figure 7 shows a fragmentary side view of the spindle employed.

Referring now more particularly to the drawings, wherein like numeralsof reference designate similar parts in each of the figures, the numerall designates the base of the framework, upstanding from which are thelegs 2, 3, 3. At the upper ends of these legs is a head plate 4. Theparts of the framework above described are 5 preferably welded togetherforming a unit. The head plate 4 has a central bearing 5 in which thegland 6 is mounted to rotate. oppositely arranged set screws l, i arethreaded through the head plate on opposite sides and their inner ends10 project into an annular groove 3 around said gland whereby the glandis secured against detachment but permitted to rotate.

There is a tubular driving shaft 9 terminating at its outer end in aheadit? and around said driv- '15 ing shaft 9 there is an externallythreaded sleeve II. A series of anti-friction spacer rings 5? surroundsthe shaft 9 and are interposed between the head [6 and the opposing endof the sleeve H. The sleeve II is threaded through the nut 20 I3 whichhas external spaced annular flanges M, l5 thereon on the former of whichthe base plate I is bolted. The lower end of the nut 53 is externallytapered and is split longitudinally as more accurately shown in Figure land an ad-26 justing ring I8 is threaded thereon.

Mounted on the upper end of the sleeve I l and keyed thereto there is ascrew gear H which is in mesh with and driven by the worm gear I8. Thisworm gear is keyed on the shaft l9, which rotates 30 in the transverselyaligned bearings 20, 2| formed integrally with the supporting plate 22.This plate has a bearing to receive the upper end of the sleeve 1 l andsaid sleeve has an external annular flange 23 which supports the plate22 and35 said plate is provided with an end notch 25 in which the leg 2fits, whereby the plate 22 is maintained against turning. The outer endof the shaft l9 has a hand wheel 25 whereby the shaft I9 may be rotatedand the sleeve 1! l fed longitu- 40 dinally through the nut l3. Theshaft 9 extends outwardly beyond the outer end of the sleeve II andsplined thereon is a bevel gear 26. The gear 26 is mounted on asupporting plate 27 through which the shaft 9 extends and interposedbetween 45 the plate 21 and the upper end of the sleeve H is a suitablewear ring 28. There is a bevel pinion 29, fixed on the inner end of ashaft 38 which shaft is mounted to rotate in a bearing 3| which upstandsfrom the extended end of the plate 21 50 and is located between the legs3, 3 whereby said plate 21 is maintained against turning. Around theshaft 9 on the bevel gear 26 there is a wear ring 32 and on said wearring 32 there is a tubular housing 33 which surrounds the upper end ofthe 55 shaft 9. Threaded onto the upper end of the shaft 9 there is anannular nut 34 and between this nut and the upper end of the housing 33there is a wear ring 35.

' Fitted snugly within the shaft 9 and extending through and beyond thehead ll) there is a spindle 36 and detachably secured to the inner endof said spindle there is a reduced stem 3'! which works through thegland 6 and is secured to said gland by means of a transverse cotter key38 which is fitted through a bearing in said gland and through one ofseveral longitudinally aligned bearings 39 through said stem.

In case the seat 53 for the valve mechanism of the pump M, should becomeout out by the gritty fluid so as to leak, the cap closing the opening42, of the pump, above the valve mechanism may be removed and a suitableadapter 33 located in said opening 42. The reamer may then be insertedthrough the adapter with its lower flange l5 seated in an inside annularrecess in the top of the adapter. Hold down clamps 44, d4 may then havetheir inner ends placed on the flange l5 and their outer ends supportedon the blocks 45 with the pump cap bolts' iti extending through bearingsin said clamps and the nuts 41 may then be screwed up tightly againstthe clamps whereby the reamer will be securely held in place.

A tool holder 53 is fitted slidably through the head til so as to bemovable transversely and one end of this tool holder has a bearing 49 toreceive the bit 58 which may be clamped therein by the set screw 3!. Alongitudinal half round section of the lower end of the spindle 36 hasbeen removed to provide a flat bearing face 52 against which the guideplate 53 fits. The inner end of this guide plate is pivoted to thespindle on the set bolt 54 and the outer end of the guide plate has atransverse slot 55 cut therethrough and the bolt 56 is fitted throughsaid slot and screwed into the spindle. On the guide plate 53 there is adiagonal guide rib 51. One side of the tool holder is cut out forming anelongated notch 58 to provide space for the spindle and within thisnotch and mounted to swivel in the chuck there is a guide bearing member59 having the transverse groove 56 which receives the rib 5?. The guideplate 53 may be adjusted to the pitch desired to be given to the reamedout seat 33. In applying the reamer to the work the stem 36 may beadjusted to its desired relation with the shaft 9, and such relationmaintained by the key 38 and the head iii may be adjusted to thedesired'point of adjustment relative to the sleeve I l by using therequired number of spacer rings l2 for that purpose, said adjustmentbeing necessary to bring the bit 53 to the desired Working location andthe plate 53 may be adjusted for pitch. A crank 6| may then be appliedto the outer end of the shaft 3E! and said shaft rotated which, in turnwill operate through the gearing 30, 23 to rotate the shaft 9 and thehead In.

to gradually feed the bit to the work through the mechanism abovedescribed. The shaft 9 and the spindle 36 will rotate simultaneously butsaid spindle will be held against longitudinal movement relative to theframe work and as the head It and the tool holder carried thereby movedownwardly, that is, as the bit 50 is fed to the work, said tool holderwill also gradually move laterally in accordance with the pitch of therib 51 so that the bit will ream out a tapered seat having the samepitch as the pitch given to said guide rib to the end that the seat 40will be reamed out smooth and with the proper taper to receive the seatof the valve mechanism of the pump.

It is obvious that this type of boring machine may be applied to thework of tapering slush pump seats and other similar heavy machinery bymerely removing the pump cap over the valve to be repaired and withoutdismantling or removing the pump from its location. i

The drawings and description disclose what is now considered to be apreferred form of the invention by way of illustration only while thebroad principle of the invention will be defined by the appended claim.

What we claim is:

A boring machine comprising a frame, a spindle rotatable on the frame, atubular driving shaft around and longitudinally movable with respect tothe spindle, means for rotating said shaft and spindle, a head on theshaft, a tool holder fitted slidably through the head and movabletransversely with respect to said head, one end of said tool holderhaving a recess, a bit clamped in said recess, the lower end of saidspindle being provided with a flat bearing face, a guide plate, fittedagainst said face, the inner end of said plate being pivotally mounted,and the outer end of the plate having a transverse slot therethrough, aclamp bolt fitted through said slot and screwed into the spindle, saidguide plate having a swiveling connection with the chuck, said plate andspindle being provided, one with a groove diagonal relative to the axisof the shaft and the other with a rib received by said groove and meansfor moving the shaft longitudinally with respect to the spindle to feedthe bit to the work.

,55 JOHN W. TURNER. EDWIN H. BRUCHMILLER.

Simultaneously the 5 shaft l9 may also be turned which will operate

